Improvement in machines for throating spokes



UNTTED STATES PATENT QFFIGE. i

JACOB WOODBURN, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO WOODBURN SAVEN7 WHEEL COMPANY,77 OF SAME PLACE.

IMPROVEMENT IN MACHINES FOR THROATING SPOKES.

Specification forming part of Letters Patent No. 118,173, dated August 15, 1871.

To all whom t may concern:

Be it known that I, J AGOB WOODBURN, of Indianapolis, in the county of Marion and State of Indiana, have invented a new Improvem ent in Machine for Throating Spokes 5v and I do hereby declare the following, when taken in connection with the accompanying drawin g and the letters of reference marked thereon, to be a full, clear, and eX- act description ofthe same, an d which said draw-A ing constitutes part of this specification, and represents, in-

Figure 1, a top view; Fig. 2, an end view from the left of Fig. 1; Fig. 3, a longitudinal section on line w .t of Fig. 1, and in Fig. 4, a detached front view of my improvement.

My invention relates to an improvement in the machine heretofore used for performing that part of the labor upon the spokes of carriage-wheels commonly called throatiugf7 and consists in a device, as more fully hereinafter described, by which a rocking movement is given to the spoke in its passage over the cutters.

A is the frame, upon which the operative mechanism is placed; B, the cutter, arranged upon a shaft, C, supported in bearings C1, and caused to revolve by the application of power to the pulley C2, D is the carriage, supported and guided by a shaft, D1, upon each end passing through and working freely in bearings D2, so that the carriage may be moved in a direct line longitudinally. or be rocked, as occasion may require, the shaft D1 forming the center. The bearings D2 are made adjustable, to set the carriage higher or lower, and the carriage is provided with a handle, E, by means of which it may be drawn back and forth, as denoted in broken lines, Fig. 3. rIhe forward part D3 of the carriage is made to slide longitudinally, by means of a lever, F, Xed upon an adjustable fulcrum, f, on the frame, and connected to the carriage by a rod, F, (see Fig. 1,) hence, as the carriage is drawn toward the left, as in Fig. 1, the bar D3 is forced forward in advance of the carriage. As thus far described, the machine is of common construction. The

spoke rests against a post, a, on the carriage, as seen in Fig. 3, the outer end against apost, d, on the bar D3, tle--handle E being pressed do'wn upon the spoke to hold it in position, and drawn forward, the spoke passesV over a cam, I, which raises or lowers the carriage to properly present the spoke to the cutters. As in this vconstruction the spoke is necessarily held ilat upon the carriage, the edge of the spoke advancing comes abruptly in contact with the cutters, and, passing over, leaves the cutters in the same manner, causing the liability of tearing the edge and not giving the desired form to the spoke-difficulties which, by my invention, are entirely overcome.

At the back of the carriage, and at the part l where the spoke is usually set, I arrange a bed,

that as the carriage is drawn from right to left,

as denoted by the broken lines in Fig. 3, the said bed 1s turned to a reverse position; therefore, standing 1n the position seen in Fig. 3, the square end of the spoke is placed on the bed, the other in the same position as heretofore, and held by the lever E, as before, presents the under surface to the cutter in an inclined position, allowing the cutter to dress far up upon the edge, and gradually as it passes over the cutter, until the spoke passes from the cutter inclined in an opposite position to that from which it started, giving the sa-me form to both edges, and more perfectly sha-pin g it than can be done without my improvement. In order to accommodate the lever to the rolling of the spoke, I pivot the end c to a post, S, on the carriage, and so as to give a universal joint, and this post I pivot to the carriage at b, which allows a longitudinal movement to the lever corresponding to the rolling of the spoke.

I claim as my invention- 1. In combination with the carriage for carrying and cutter for dressing spokes, the rocking table L, made to operate substantially in the manner and for the purpose specified. 2. In combination with the rocking device for the support of the spoke on the carriage, the lever E upon the post S, as and for the purpose specified.

Witnesses:

S. T. SMITH, J. F. PRATT.

JACOB WOODBURN. 

